EP 3839294 A4 20210818 - SPEED REDUCER AND ROBOT
Title (en)
SPEED REDUCER AND ROBOT
Title (de)
DREHZAHLMINDERER UND ROBOTER
Title (fr)
RÉDUCTEUR DE VITESSE ET ROBOT
Publication
Application
Priority
- CN 201811092720 A 20180919
- CN 2018122714 W 20181221
Abstract (en)
[origin: EP3839294A1] A speed reducer and a robot. The speed reducer is provided between a first part and a second part of the robot, and includes a rigid wheel (2), a flexible wheel (1) and a flexible bearing (3); the rigid wheel (2) is provided with a first fitting position, and an inner wheel tooth set (21) is provided on the inner side of the rigid wheel (2); a second fitting position (10) is provided on a peripheral wall (11) of the flexible wheel (1); the peripheral wall (11) is provided with an outer peripheral surface (112) and an inner peripheral surface (111); the outer peripheral surface (112) is provided with an outer wheel tooth set (113); the flexible bearing (3) is located in the second fitting position (10); the flexible wheel (1) is located in the first fitting position; the outer wheel tooth set (113) is engaged with the inner wheel tooth set (21); in the axial direction of the rigid wheel (2), the tooth top (113a) of the outer wheel tooth set (113) is provided with a first length (d1), and the tooth root (113b) of the outer wheel tooth set (113) is provided with a second length (d2); the tooth top of the inner wheel tooth set (21) is provided with a third length (d3); the flexible bearing (3) is provided with a fourth length (d4); the second length (d2) and the third length (d3) are both greater than the first length (d1), and the fourth length (d4) is greater than the second length (d2). A position, where the outer wheel tooth set (113) is located, of the peripheral wall (11) is sufficiently expanded; expanding and deforming of the peripheral wall in the peripheral direction are uniform; the meshing and contact of the wheel tooth sets are more sufficient; the transmission error is effectively reduced; and the service life of the flexible bearing (3) is prolonged.
IPC 8 full level
F16H 49/00 (2006.01)
CPC (source: CN EP US)
B25J 9/1025 (2013.01 - CN EP US); B25J 9/108 (2013.01 - US); F16H 49/001 (2013.01 - CN EP); F16H 57/021 (2013.01 - CN EP); F16H 57/023 (2013.01 - CN EP); F16H 2049/003 (2013.01 - EP); F16H 2057/02069 (2013.01 - CN EP)
Citation (search report)
- [XAI] DE 102016220916 A1 20171012 - SCHAEFFLER TECHNOLOGIES AG [DE]
- [XAI] DE 102016218927 A1 20171102 - SCHAEFFLER TECHNOLOGIES AG [DE]
- [E] WO 2019170198 A1 20190912 - SCHAEFFLER TECHNOLOGIES AG [DE]
- [E] CN 208778633 U 20190423 - GREE ELECTRIC APPLIANCES INC ZHUHAI
- [XP] CN 109027180 A 20181218 - GREE ELECTRIC APPLIANCES INC ZHUHAI
- [A] CN 2351616 Y 19991201 - CHANGCHUN OPTICS FINE MECH [CN]
- [A] CN 202732859 U 20130213 - SUZHOU LEADERDRIVE TRANSMISSION TECHNOLOGY CO LTD
- See also references of WO 2020056963A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3839294 A1 20210623; EP 3839294 A4 20210818; CN 109027180 A 20181218; CN 109027180 B 20240514; US 11648662 B2 20230516; US 2021197365 A1 20210701; WO 2020056963 A1 20200326
DOCDB simple family (application)
EP 18934148 A 20181221; CN 201811092720 A 20180919; CN 2018122714 W 20181221; US 202117198507 A 20210311